Sound Decoded: Why Brand Share of Voice Has a Hidden Sound Problem

Main Facts: The Great Asymmetry in Modern Marketing

In modern corporate boardrooms, media planning is treated as an exact, unyielding science. Spend ten minutes with a media director, and you will be met with a cascade of precise calculations: a granular share of voice (SOV) tracker, a comparative analysis against share of market (SOM), and meticulously modeled forecasts stretching across the next four quarters. The math is ironclad, the reporting cadences are weekly, and the conversations are undeniably rigorous.

Yet, step into a parallel meeting room and ask those same executives about the music underpinning that very media, and the analytical architecture evaporates into thin air. The track in a multi-million-dollar campaign is often hand-waved away as “a really nice find from the agency.” The creative brief is frequently reduced to vague adjectives like “optimistic” or “modern,” and the creative director signs off simply because a track “felt right in the room.” For the next campaign, the brand will inevitably pivot to a completely different track, sourced from a different reference point, and commissioned by an entirely new team.

This exposes a glaring paradox in contemporary brand management: a single enterprise operates with two entirely different budgets, and two diametrically opposed discipline cultures. One culture treats share of voice as a rigid strategic planning lever, while the other treats music and sound as an arbitrary finishing touch. According to recent industry analyses, this foundational disconnect quietly costs global brands more capital than almost any other production decision they make, leaking hard-earned equity through an unmonitored audio pipeline.

Chronology: The Evolution of Share of Voice and the Audio Blind Spot

To understand how modern marketing arrived at this acoustic impasse, it is necessary to trace the historical evolution of media planning frameworks and how they historically sidelined sonic identity.

1990–2000s: The Genesis of ESOV

The foundational framework governing modern marketing budgets traces its lineage back to a seminal 1990 article by John Philip Jones in the Harvard Business Review. Jones’s work was subsequently expanded upon and validated by the extensive empirical analyses of Les Binet and Peter Field, drawing on the deep data reservoirs of the IPA Databank. Their core conclusion became the North Star of media planning: brands whose Share of Voice (SOV) exceeds their Share of Market (SOM)—yielding a metric known as Excess Share of Voice (ESOV)—tend to experience reliable, long-term market growth.

Industry shorthand established a dependable rule of thumb: multiplying a brand’s ESOV by 0.05 yields its projected annual market share growth percentage. This macro-economic equation completely transformed how marketing budgets were defended in front of skeptical CFOs and boards of directors. Spend became defensible, and creative quality began to be understood as a quantified efficiency multiplier.

2010s: The Visual Standardization Era

As digital channels proliferated throughout the 2010s, brands scrambled to standardize their visual identities to capture fragmented attention. Visual consistency became gospel. Brand teams built exhaustive digital asset management systems, laying down strict rules for logos, color palettes, and typography. The underlying assumption was simple: for ESOV to compound mental availability, the consumer needed to recognize that Monday’s advertisement was fundamentally the same brand as Wednesday’s placement.

However, this standardization was almost exclusively visual. While graphic guidelines were meticulously detailed down to the exact hex code, the audio domain remained an unmapped Wild West.

Present Day: The Disconnect Exposed

Today, brands find themselves trapped in a technological mismatch. Media buying is programmatic, hyper-targeted, and obsessively measured, yet the emotional vehicle carrying the brand message—music—is still selected on gut instinct. Industry experts and marketing leaders are finally confronting this historical oversight, arguing that treating sound as a mere decoration is an outdated methodology in an increasingly auditory digital landscape.

Supporting Data: The Measurable Power of Audio

The justification for investing in audio channels is no longer a matter of debate; the data overwhelmingly proves its efficacy. What remains broken is how brands populate those channels with sound.

Recent industry reports paint a stark picture of modern consumer behavior:

• The "Sound-On" Reality: Spotify’s Sound-On Era report reveals that an overwhelming 92% of US consumers actively stop other online activities simply to stream audio. Furthermore, 87% of users will deliberately silence videos on other platforms if the audio experience is subpar, favoring sound-driven environments instead.
• Trust and Conversion: Consumers are reported to be 36% more likely to trust music or podcast advertisements compared to traditional social media interruptions.
• Return on Investment: According to marketing mix modeling data shared by LinkedIn’s Hilary Batsel, audio initiatives consistently drive a 4x to 8x return on investment in incremental revenue.

Despite this quantitative backing for the medium itself, the specific musical composition inside the ad—the actual carrier of the brand’s identity—is rarely subjected to the same analytical standards. Tammy Henault, former Chief Marketing Officer (CMO) at organizations including the NBA, Paramount+, and The New York Times, highlights this oversight:

"Brands need to stop thinking about audio as a bolt-on, and start thinking about it as a foundational element to their plan."

If audio is foundational, then music can no longer be treated as mere acoustic wallpaper.

Official Perspectives and Industry Insights

Forward-thinking audio branding experts and agency leaders are pushing for a radical operational shift. Shai-Caleb Hirschson, a prominent voice in sonic branding, argues that brands must introduce an equivalent to visual brand guidelines for the ear: a concept known as mDNA (Musical DNA).

According to advocates of this approach, establishing an mDNA solves four critical friction points that plague modern brand production:

1. It Eliminates Taste Arbitration

The most expensive and recurring bottleneck in brand music production is the subjective debate where stakeholders argue over which of four tracks “feels right.” By establishing a concrete set of musical parameters ahead of time, the room shifts from subjective arguments (“I prefer this track”) to objective evaluation (“This track fits the defined brand parameters, while this one does not, and here is the data to prove it”). This leads to faster, calmer, and more defensible decisions.

2. It Makes the Creative Brief Portable

A generic reference track tells an international composer to copy an existing piece—something they often cannot legally do and would not be on-brand even if they could. Conversely, a clearly defined parameter set travels seamlessly across borders and languages, allowing local teams to produce culturally relevant work that remains tethered to a global brand identity.

3. It Makes Music Testable Before Spend

While brands routinely pre-test taglines, packaging thumbnails, and cover images, they rarely test music due to a historical lack of evaluative frameworks. With a defined mDNA, prospective tracks can be scored against both brand identity and campaign objectives before a single dollar of media spend is allocated.

4. It Exposes Brand Drift

Most marketing teams cannot accurately answer how "on-brand" their musical footprint has been over the past twelve months. With a scoring system in place, brands can track which campaigns sat comfortably within their sonic boundary, which hovered at the edges, and which strayed completely off the map, identifying precisely where equity was lost.

Implications: The Economic and Operational Future of Sound

The asymmetry between how brands plan their visual voice and how they approach their sonic identity is unsustainable. When a corporation pours millions into optimizing its Excess Share of Voice (ESOV) while maintaining casual, unstructured music governance, it is asking its capital to achieve a compounding effect that its operational systems are simply not built to deliver.

Closing this gap does not necessitate the creation of bloated new corporate departments or inflated budgets. Rather, it demands the application of the exact same rigorous standards to sound that the industry already applies to every other line item on the balance sheet.

By pulling the music brief upstream—determining the sonic strategy before the storyboard is locked—and establishing a closed-loop feedback mechanism to track audio performance over time, brands can transform music from an expensive afterthought into their most emotionally efficient, recognizable asset. The work is structural, slow, and deliberate, but for modern brands navigating an increasingly noisy digital marketplace, it is the ultimate untapped lever for sustainable growth.